I often want to temporarily modify the options() options, e.g.
a <- seq(10000001, 10000001 + 10) # some wide object
with.options <- function(..., expr) {
options0 <- options(...)
tryCatch(expr, finally=options(options0))
}
Then I can use:
with.options(width=160, expr = print(a))
But I'd like to avoid explicitly naming the expr argument, as in:
with.options(width=160, print(a))
How can I do this with R's argument matching? (I prefer the expr as
the last argument since it could be a long code block. Also, I'd like
with.options to take multiple options.)
TIA
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